package com.lilosoft.core.utils;

import com.lilosoft.core.support.WafRequestWrapper;
import org.apache.http.NameValuePair;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.utils.URIBuilder;
import org.apache.http.entity.ContentType;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.net.URI;
import java.util.ArrayList;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

public class HttpUtil {

	public static String getIp(){
		return getRequest().getRemoteHost();
	}

	/**
     * 获取所有请求的值
     */
    @SuppressWarnings("rawtypes")
	public static Map<String, String> getRequestParameters() {
        HashMap<String, String> values = new HashMap<>();
        HttpServletRequest request = HttpUtil.getRequest();
        Enumeration enums = request.getParameterNames();
        while ( enums.hasMoreElements()){
            String paramName = (String) enums.nextElement();
            String paramValue = request.getParameter(paramName);
            values.put(paramName, paramValue);
        }
        return values;
    }

    /**
     * 获取 HttpServletRequest
     */
    public static HttpServletResponse getResponse() {
        HttpServletResponse response = ((ServletRequestAttributes) RequestContextHolder.getRequestAttributes()).getResponse();
        return response;
    }

    /**
     * 获取 包装防Xss Sql注入的 HttpServletRequest
     * @return request
     */
    public static HttpServletRequest getRequest() {
        HttpServletRequest request = ((ServletRequestAttributes) RequestContextHolder.getRequestAttributes()).getRequest();
        return new WafRequestWrapper(request);
    }

    public static String doGet(String url){
    	return doGet(url,null);
	}

	public static String doGet(String url, String httpAppKey) {
		return doGet(url, httpAppKey, null);
	}
    /**
     *
     * @param url
     * @param httpAppKey
     * @param param
     * @return
     */
	public static String doGet(String url, String httpAppKey, Map<String, String> param) {

		// 创建Httpclient对象
		CloseableHttpClient httpclient = HttpClients.createDefault();

		String resultString = "";
		CloseableHttpResponse response = null;
		try {
			// 创建uri
			URIBuilder builder = new URIBuilder(url);
			if (param != null) {
				for (String key : param.keySet()) {
					builder.addParameter(key, param.get(key));
				}
			}
			URI uri = builder.build();
			System.out.println("==请求URL:"+uri.toString());

			// 创建http GET请求
			HttpGet httpGet = new HttpGet(uri);


			// 填入appkey到HTTP header
			if(StringUtils.isNotEmpty(httpAppKey)){
				httpGet.setHeader("AppKey", httpAppKey);
			}
			// 执行请求
			response = httpclient.execute(httpGet);
			// 判断返回状态是否为200
			if (response.getStatusLine().getStatusCode() == 200) {
				resultString = EntityUtils.toString(response.getEntity(), "UTF-8");
			}
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			try {
				if (response != null) {
					response.close();
				}
				httpclient.close();
			} catch (IOException e) {
				e.printStackTrace();
			}
		}
		return resultString;
	}

	public static String doPost(String url, Map<String, String> param) {
		// 创建Httpclient对象
		CloseableHttpClient httpClient = HttpClients.createDefault();
		CloseableHttpResponse response = null;
		String resultString = "";
		try {
			// 创建Http Post请求
			HttpPost httpPost = new HttpPost(url);

			// 创建参数列表
			if (param != null) {
				URIBuilder builder = new URIBuilder(url);
				List<NameValuePair> paramList = new ArrayList<>();
				for (String key : param.keySet()) {
					builder.addParameter(key, param.get(key));
					if("AppKey".equals(key)){
						httpPost.setHeader("AppKey", param.get(key));
					}else {
						paramList.add(new BasicNameValuePair(key, param.get(key)));
					}
				}
				URI uri = builder.build();
				System.out.println("==请求URL:"+uri.toString());
				// 模拟表单
				UrlEncodedFormEntity entity = new UrlEncodedFormEntity(paramList, "utf-8");
				httpPost.setEntity(entity);
			}
			// 执行http请求
			response = httpClient.execute(httpPost);
			resultString = EntityUtils.toString(response.getEntity(), "utf-8");
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			try {
				response.close();
			} catch (IOException e) {
				e.printStackTrace();
			}
		}

		return resultString;
	}

	/**
	 * 指定字符集charset
	 * @param url
	 * @param param
	 * @param charset
	 * @return
	 */
	public static String doPost(String url, Map<String, String> param, String charset) {
		// 创建Httpclient对象
		CloseableHttpClient httpClient = HttpClients.createDefault();
		CloseableHttpResponse response = null;
		String resultString = "";
		try {
			// 创建Http Post请求
			HttpPost httpPost = new HttpPost(url);

			// 创建参数列表
			if (param != null) {
				URIBuilder builder = new URIBuilder(url);
				List<NameValuePair> paramList = new ArrayList<>();
				for (String key : param.keySet()) {
					builder.addParameter(key, param.get(key));
					paramList.add(new BasicNameValuePair(key, param.get(key)));
				}
				URI uri = builder.build();
				System.out.println("==请求URL:"+uri.toString());
				// 模拟表单
				UrlEncodedFormEntity entity = new UrlEncodedFormEntity(paramList, charset);
				httpPost.setEntity(entity);
			}
			// 执行http请求
			response = httpClient.execute(httpPost);
			resultString = EntityUtils.toString(response.getEntity(), charset);
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			try {
				response.close();
			} catch (IOException e) {
				e.printStackTrace();
			}
		}

		return resultString;
	}

	public static String doPost(String url) {
		return doPost(url, null);
	}

	public static String doPostJson(String url, String json) {
		// 创建Httpclient对象
		CloseableHttpClient httpClient = HttpClients.createDefault();
		CloseableHttpResponse response = null;
		String resultString = "";
		try {
			// 创建Http Post请求
			HttpPost httpPost = new HttpPost(url);
			// 创建请求内容
			StringEntity entity = new StringEntity(json, ContentType.APPLICATION_JSON);
			httpPost.setEntity(entity);
			// 执行http请求
			response = httpClient.execute(httpPost);
			resultString = EntityUtils.toString(response.getEntity(), "utf-8");
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			try {
				response.close();
			} catch (IOException e) {
				e.printStackTrace();
			}
		}

		return resultString;
	}

	public static void main(String[] args) throws Exception {
		//查询参数
		Map<String, String> param = new HashMap<>();
		param.put("type", "2");
		param.put("itemType", "XK");

		//调用服务
		String json = HttpUtil.doGet("http://59.208.245.184:9970/gateway/api/1/hb/power/folder/info/info", "425613669095702528", param);
		System.out.println(json);

//		//调用taotao-order的服务提交订单。
//		String jsonContent = "{}";
//		String jsonRet = HttpClientUtil.doPostJson("http://192.168.25.136:8083/order" + "/create", jsonContent);
	}
}
